#55CF87
Closest named color: Seaweed (#18D17B). oklch(76.7% 0.151 154.5), rgb(85, 207, 135).
Aa
Black text reads best on this color (10.66:1).
About this color
#55CF87 is a medium-light, vivid green. In OKLCH its lightness is 77%, its chroma 0.151 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.033 away. Black text reads best on it, at 10.66:1.
| Hue family | Greens |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 10.66:1 |
| White text | 1.96:1 |
Values
| HEX | #55CF87 |
| RGB | rgb(85, 207, 135) |
| HSL | hsl(145, 56%, 57%) |
| OKLCH | oklch(76.7% 0.151 154.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #55CF87 | 1.96:1 | Fails | Lc -42.1 | Non-text elements, placeholder text |
| Black text on #55CF87 | 10.66:1 | AAA | Lc 66.2 | Content text, not long reading |
| #55CF87 text on white | 1.96:1 | Fails | Lc 37.7 | Non-text elements, placeholder text |
| #55CF87 text on black | 10.66:1 | AAA | Lc -64.7 | Content text, not long reading |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 300.
-
Step 50
50
#ECFAEF
oklch(97.2% 0.021 152.2)
-
Step 100
100
#D4F3DD
oklch(93.6% 0.044 154.6)
-
Step 200
200
#ADEAC1
oklch(88.5% 0.084 154.9)
-
Step 300
300 (this color)
#55CF87
oklch(76.7% 0.151 154.5)
-
Step 400
400
#00BF6C
oklch(70.6% 0.176 154.5)
-
Step 500
500
#00A45C
oklch(63.1% 0.158 154.5)
-
Step 600
600
#008A4D
oklch(55.6% 0.138 154.7)
-
Step 700
700
#007440
oklch(49.1% 0.122 154.8)
-
Step 800
800
#005F33
oklch(42.6% 0.106 154.6)
-
Step 900
900
#004F2A
oklch(37.6% 0.093 154.9)
-
Step 950
950
#003017
oklch(27.1% 0.068 154.6)
#55CF87 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #CFC082 | 0.134 |
| Deuteranopia (no green cones) | #BEB48C | 0.131 |
| Tritanopia (no blue cones) | #2ACDBC | 0.074 |
| Achromatopsia (no color) | #B9B9B9 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55CF87
#55CF87
oklch(76.7% 0.151 154.5)
- #ED8CDA
#ED8CDA
oklch(76.7% 0.152 334.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #55CF87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.033
- Emerald #06D6A0 ΔE 0.035
- Soft Green #6FC276 ΔE 0.037
- Greenblue #23C48B ΔE 0.044
- Dark Mint #48C072 ΔE 0.047
- Aqua Green #12E193 ΔE 0.049
- Algae Green #21C36F ΔE 0.053
- Medium Aquamarine #66CDAA ΔE 0.053
Use #55CF87 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.